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Quitte gisten getint @fitter JOHN F'. MORSE, OF OSHKOSH,l WISCONSINLamai Parent 1v. versandten member 31,1867.

IMPROVEMENT STEAM-ENGINE VALVES.

To ALL WHoM rr MAY coNcERN: y

Be it known that I, JOHN F. Monsmof Oshkosh, in the county of Winnebago,and State of Wisconsin, have invented certain new and usefulImprovements in Balanced Oscillating Valves; and I do hereby declarethat the following is a full, clear, and exact description thereof,reference being had to the accompanying drawings, making part of thisspecification, and to the .letters of reference -marked there'om'likeletters indicating like parts wherever they occur. Y

.To enable others skilled in the arttoconstruct-and use my invention, Iwill proceed to describe it.

My invention relates to balanced oscillating valves for steam-engines,or when steam is used to work mechanism of any kind; and consists ofcertain new and useful improvements in their construction, and in a.l

novel arrangement o f mechanism lfor the convenient adjustment of theslide, when it becomes loose by wear or otherwise. In the drawingsvFigure 1 is 4a cross vertical section of the valve-chestgand cylinder,and

Figure2 is a longitudinal section of the slide, on the liuc :r of lig.I.

Figure 3 is a cross vertical section of the valve-slide mounted ou asquare shaft.

I construct my valve-chest A of cylindrical form, and place ittransversely over the cylinder B.: In' the lower. side of thevalve-chest A, I make three openings, a b c.l The openings a and c leadlto and-arc connected with the opposite ends of the cylinder B. Theopening` c is for the escape of thesteam from'the cylinder B, throughthe cduction-pipe C, The pipes or pas'sagesleading from the valve-chestA to the opposite ends of the cylinder Bare cast in the shell of thecylinder, as shown in iig. 1`. The steam I admit into the'val've-chest-A, through the pipef. Within the valve-chest A, I place the balancedoscillating valve-slide C, mounted on the shaft D, to which it is keyedso asto turnwith it. fThe form and construction of this slide areclearly shown in the drawings. 'It is made so as to leavethervacantspace E, between it's two faces h and g, within thevalvechest. The faces h and g are made circular, so as to slide upon theinterior face of the valve-chest A. The face g is hollow-sd, so as toform a chamber, j, 'asshown in both figures, and just large enough toconnect the pipes or steam-passages a and b, or b and c, as itoscillates. It also forms a solid part of the slide C, being cast withthe cross-pieces'z, throughwhich the shaft I) passes. The oppositebalancing face-plate'h is connected withthe cross-pieces .beytongues c,which fit into corresponding grooves Z, and are fastened .byfpins m.yThe bottoms of the grooves Z, and the ends of the tongues k, I makewedge-shaped, as shown in'iig. 2. The holes in the tongues c, throughwhich the pins m pass, I make large enough to allow a. vertical movementof the I face-plate h for adjustment. Between the tongues k and thebottom of the grooves Z, I insert the adjustingwedges o of, having stemspp', having right and left screws cut upon them respectively.v Thesestems pp screw into a nut, q, as shown in iig. 2. By turning the nutqthe adjustable wedges o of will'be forced in between the tongues c andthe bottom of the grooves l, and the face-plate h be pressed closelyagainst the interior face of the Avalve-chest A. A 'v y v y Instead ofusing a. round shaft, D, as shown in figs. 1 and 2, and keyingthcvalve-slide C to it, a square shaft may b e used, as shownin fig.' 3.When I use a square shaft, I make the slot in the valve-slideC, throughwhich the shaft D passes, large enough to allow the valve-slide C tohave a vertical movement on the-shaft, as shown in iig. 3, and do not inthat case-key'the valve-slide fast to the shaft, except to prevent alateral movement.' By this nrrangement,in turning thenut q both of theface-plates h and -g will be pressed closely against the interior faceof the valve-chest A. The top and bottom, or upper and lower faceplates,I make of equal size,`so that they may present the same extent' ofrubbing-surface to the face of the valve-chest, and y in that way bebalanced.

Myvalve is operated by means of the shaft D, and oscillates. It connectsthe steam-passagesa and b,

and .then b and c, the steam in thc first place -entering thevalve-chest A, and passing into the cylinder B, in the direction ofthered arrows, as shown in iig. 1,-:md leaving the opposite side 'of theplunger in the cylinder, as shown by the red arrows in the same figure.j

It will Ybe readily seen that whenever the face-plates7t and g becomeworn, so that the' steam may-pass between their surfaces andthe opposingsur-faces ofthe valve-chest, 'theyl can be conveniently and closelyadjusted by turning thenut q, as already described.

-Hoving thus desribed my invention, what I claim, is-

1. A balanced oscillating valve, having its fade-plates h and g soarranged that as they are wor'n they may lie adjusted bythe wedges o,constructed and arranged to -operate substantially ns'described.

2. The wedges o :md-the nut gz when constructed and nrrnged to oneratesubstantially as described and for the purpose set forth. v J. F. MORSE.

Witnesses:

ANSEII JONES, Cms.v C. -PREIGEI 56M @inn-@ff 4614, W7@

